# CVE-2019-5155: Command injection in WAGO PFC200 Firmware

> Attackers can inject OS commands via firmware update parameters in WAGO PFC200 cloud connectivity, leading to code execution.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Mar 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-2g7j-m3mp-pr8p

## What is CVE-2019-5155?

CVE-2019-5155 is a high-severity command injection vulnerability in WAGO PFC200 Firmware, published on 10 Mar 2020. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

An exploitable command injection vulnerability exists in the cloud connectivity feature of WAGO PFC200. An attacker can inject operating system commands into any of the parameter values contained in the firmware update command. This affects WAGO PFC200 Firmware version 03.02.02(14), version 03.01.07(13), and version 03.00.39(12)

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2019-5155?

It affects 1 product.


Products: Wago Pfc200 Firmware.

## How do I fix CVE-2019-5155?

No fix has been published for CVE-2019-5155 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-5155 being exploited?

There is no known exploitation of CVE-2019-5155 in the wild and no public exploit code.

## Other vulnerabilities in WAGO PFC200 Firmware

- [CVE-2018-5459](https://insights.sbomify.com/CVE-2018-5459/): Auth bypass in WAGO PFC200 Series (critical 9.8)
- [CVE-2019-5160](https://insights.sbomify.com/CVE-2019-5160/): Server-side request forgery in WAGO PFC200 Firmware (critical 9.1)
- [CVE-2019-5161](https://insights.sbomify.com/CVE-2019-5161/): Code injection in WAGO PFC200 Firmware (critical 9.1)
- [CVE-2019-5184](https://insights.sbomify.com/CVE-2019-5184/): Use after free in Wago (high 7.8)
- [CVE-2019-5169](https://insights.sbomify.com/CVE-2019-5169/): Command injection in WAGO PFC200 (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-5155 and fix it if it is affected.

What it is: CVE-2019-5155 is a high-severity command injection vulnerability in WAGO PFC200 Firmware, published on 10 Mar 2020. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-5155 in the wild and no public exploit code.

Affected product: WAGO PFC200 Firmware. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2019-5155/ (Markdown: https://insights.sbomify.com/CVE-2019-5155/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-5155
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-5155
- OSV: https://osv.dev/vulnerability/CVE-2019-5155

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-5155/
Summaries are generated and may contain mistakes; the official description above is the record.